be wide awake
be fast asleep
to take a power nap
feel drowsy
nod off
sleep like a log
be sound sleep
toss and turn
drift off
sleeping in a way that makes it difficult to wake you
fall asleep unintentionally.
sleeping deeply
to sleep very soundly , so well that noises don't even wake you up.
you gradually fall asleep
sleepy and having low energy
to take a brief sleep during the day in order to improve one's alertness and ability to work efficiently throughout the remainder of the day
Someone who is fully awake and unable to sleep
to move about and turn over in bed because one is unable to sleep tossing and turning all night